Orlando p



(No Model.)

FILTER.

Patented Sept. 25, 1894.

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Mts @Homage UNITED STATES PATENT OEEICE.

ORLANDO P. BRIGGS, OF CHICAGO, ILLINOIS, ASSIGNOR OF ONE-HALF TO ARTHUR W. COOPER, OF SAME PLACE. l

FILTER.

SPECIFICATION forming part of Letters Patent No. 526,515, dated September 25, 1894. Application met october 15,1891. sel-iu No. 408,773. (No modem f' .T0 @ZZ whom it may concern:

Be it known that I, ORLANDO P. BRIGGS, o Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Filters; and I do hereby declare that the following is a full, clear, and exact description thereof, reference being had to the accompanying drawings, and to the letters of reference marked thereon, which form a part of this specification.

This invention relates to that classof filters designed for attachment to ordinary faucets, and has for its object to provide a device of the character indicated which may be readily cleaned without being detached from the faucet to which it is applied.

My invention consists in the matters de` scribed in the following specification and pointed out in the claims appended.`

In the accompanying drawings-Figurel, is a central vertical section of a filter embodying my improvements. Fig. 2, is a similar section taken through the lower half of the outer case at right angles to the section shown in Fig. 1. Fig. 3, is a detail section of a thimble designed to couplethe filter to a screw threaded faucet. Fig. 4 is a plan View of a thimble designed for use in coupling the filter to the faucet. Fig. 5, is a plan view of the closing cap for the inner case. Fig. 6, is adetail vertical section taken upon line 6--6 of Fig. l. Fig. 7, is a detail end view of the valve-plug of the lter. Fig. 8, is a detail section illustrating another form of coupling for connecting thedevice to a faucet.

In the form of device which I have selected as well illustrating the novel features of my invention, two hemi-spherical shells A and .A2 are united to form a spherical case A, with-` in which is inclosed a spherical filtering vessel B, and provided at its bottom with a central discharge nozzle a.

The walls of the outer and inner cases A and B are arranged concentrically at some considerable distance apart, to leave a space or passage C between them through which the water flows in the operation of the filter.

The semi-spherical shell A forming the u pper part of the outer case A, is provided centrally with a projecting boss As of large diameter having a central tapering bore threaded to receive the threads of an exterior-ly tapered split sleeve D, of length sufficient to project above the boss A3, and provided at its upper end with a ange d, having a milled edge or flat `faces or projections to be engaged by a wrench. This `split sleeve is also provided at its top with interiorly projecting lugs d', and the boss A3 terminates interiorly in a diaphragm 0.3 pierced at the center by an opening of substantially the same diameter as the discharge opening of a faucet. A packing ring d2 of rubber, is seated within the split sleeve D, itsends abutting against the lugs d' of said sleeve, and the diaphragm a3 of the case.

. The open side of the semi-spherical shell A terminates in a double flange composed of inner and outer members a4 a5 separated by anannular groove within which is seated a packing a6 of rubber or other suitable 1nate rial. j The outer member n.5 of this double `ange is threaded interiorly to engage male threads formed on the open end of the semispherical shell A2 forming the lower part of the case A, and the metal of this open end of shell A2 is of proper thickness to fit snugly within the groove between said inner and outer members a4 and a5 of the double iiange of case A and to rest against the packing a6 therein.

The lower or closed side of the shell A2 is provided with a transversely elongated boss A4 having a tapering bore or plug chamber to receive a tapered valve plug E, and a tubular or hollow post A5 projects from the center of this boss, above the tapered bore or plug chamber, into the case A, and terminates somewhat below the upper edge or rim of the shell A2. On either side of the post A5 an opening o.' is formed, affording communica` tion between thespace or passage C and the plug chamber.

The lower half of the inner or filtering vessel B may consist of a skeleton frame or spider B covered by a shell b formed of tine wire cloth, the lower edge of which is secured to the hub b of the spider, while its upper edge is secured to the open end of a cup shaped shell B2 forming the upper half of said ltering vessel. The hub of the spider is seated on a shoulder formed on the central hollow IOO post A and secured in position by a tube F the lower end of which is internally threaded to engage the threaded upper end of the post A5 which projects above the upper end of the hub b of the spider B. at its upper end and provided at its sides with longitudinal slots f, which are covered by wire cloth f of fine mesh, preferably applied in the form of a cylinder surrounding the upper part of the tube. The closed upper end of tube F is grooved transversely to admit of said tube being screwed upon or unscrewed from the post A5 by means of a screw, driver inserted through an opening b2 in the upper part of the upper shell B2 of the filtering vessel B. The upper end of this shell B2 is preferably flattened at the top, and surrounding the opening b2 therein, is an annular flange b3, threaded interiorly to receive a screw cap B3 by means of which said opening y b2 is closed.

The spider B is composed of a hub b' and ribs h4 b4 projecting radially therefrom, the outer edges of said ribs being curved in an arc, corresponding with the curvature of the outer case A, and provided with shoulders b5 b5 upon which rests the edge of the upper shell B2. These ribs b4 of the spider, serve to hold distended the shell b of wire cloth and support it against the pressure of water contained in the space 0r passage C surrounding it.

The plug E is ground to fit tightly within the tapered plug chamber of the boss A4 and is provided with a through passage e to connect the hollow post A5 with the discharge nozzle a, and with passages e adapted for connecting the openin gs or passages a of the case A with said nozzle a. The passages e e are arranged out of line withthe opening e, so that when the opening e is opposite the passage of the tubular post, the other openings e e will be turned away from the passages d a. I prefer to use the hollow form of plug here shown, and to make the passages e and e e in the form of openingsin the .sides of the plug leading to the hollow interior thereof, a single opening or slot e2 being provided in the plug adjacent to the exit passage a, said opening being ofsuch length circumferentially of the plug, as to remain opposite the said passage a, when either the opening e or the openings e e are opposite the passages in the case. This particular form of the valve plug is not, however, esseni tial and any other form thereof, adapted for producing the result stated, may be used.

The smaller end of the plug E is provided with a squared seat vfor the reception of a washer E', and a threaded stud projects centrally from said squared seat for the attachment of a nut F.2 by which the plug is held securely in its chamber.

A pin 0,4 projects from the end of the boss A4 adjacent to the plug E, and engages a segmental groove out in the inner face of washer E, thus affording a stop to arrest the move- This tube F is closed ment of the plug E, when the passage e thereof is opposite the passage in post A5, and at its vpassage therethrough, as either the opening e or c will be opposite one of the passages in the case A. Therefore if the faucet is turned to permit a flow of water, said water will flow, when the valve plug E is in the position shown in Fig. l, through the chamber C surrounding the filtering vessel, and pass from the nozzle a unfiltered.

When the plug is at the opposite limit of movement, the passages a are closed by the plug E, and water will pass from chamber C through the shell b of wire cloth and through the filtering material in vessel B, and outward through the nozzle a. by way of the tube F and the hollow post A5. This arrangement provides for the automatic flushing or cleansing of the outer surface of the filtering vessel B, as the attrition of water flowing past the said outer surface of the vessel on its passage through the chamber C, to the outlet passages a of said chamber, will remove a greater part of the sediment deposited on said vessel during previous filtrations.

The modified form of coupling sleeve D, shown in Fig. 3, is designed for attachment to a faucet having an external screw thread on its discharge end, said sleeve being for this purpose, a complete cylinder internally threaded at its upper end to engage the threads of the faucet. The discharge end of the faucet in this instance, is not inserted within the rubber packing d, but bears upon the upper end of said packingto form atight 'oint.

J In the form of coupling shown in Fig. 8, the inner walls of the boss A3 are parallel and threaded for direct engagement with the threaded end of a faucet, a packing ring d2, of proper form, being arranged within the boss, at its lower end, to insure a tight joint. The sleeve D,-is in this instance, provided exteriorly with a thread to fit the internal threads of the boss A3, the interior of said sleeve being of a diameter to receive the discharge end of a plain faucet, as shown. The screw D is provided with a set screw d4, to lock: it securely in position upon the end H, of a faucet.

An important advantage is gained by the construction described, by which the lower part of the spherical inner case or vessel is made of pervious material for the reason that the water is vthereby caused to pass upwardly through the .filtering material, and sediment is accumulated on the under suru IOD face of the pervious wall of vessel, adjacent r to the outlet passages, so that said sediment will tend to free `itself by gravity, from the outer surface of pervious wall, and the removal thereof, by the downward iiow of water, is greatly facilitated, though it will be understood that I do not confine myself to this specific construction as it will be apparent that the advantages of other features described are not dependent on this particular construction of the filter proper, B, but may be advantageously employed with any globular filter which delivers from its interior and is surrounded by aspace or passage permitting the flow of water over its exterior.

1. A filtering attachment for faucets, comprising an outer case having aninlet and a discharge nozzle, and an inner case or vessel, said outercase having an outlet passage coinmunicating with the space between the inner and outer casing and with the said nozzle, and provided with acentral tubular post also coniniunicating with said nozzle and forming an outlet passage for the inner case or vessel, said inner case or vessel consisting of aspider secured to the said tubular post, a pervious shell supported on the ribs of the spider and forming the lower part of said inner oase,and an upper impervious shell united at its lower edges with the pervious shell and means for simultaneously opening one of said outlets or discharge passages and closing the other, substantially as described.

2. A filtering attachment for faucets comprising an outer case having an inlet and a discharge nozzle, and an inner filtering case or vessel inclosed within the same, said outer case having a passage leading from the space between the inner and outer case to the discharge nozzle, and having a tubular post also communicating with said discharge n ozzle and forming an outlet passage for the inner filtering vessel, said inner vessel consisting of a spider secured upon thetubular post, a pervious shell supported upon the ribs of the spider, and an impervious shell united at its edges to the pervious shell and provided with a central opening closed by a removable cap, and a tube surrounding the upper end of the tubular post within the inner vessel and piovided with slots or openings covered by pervious material, and means for simultaneously opening one of the said outlet or discharge passages and closing the other, substantially as described.`

In testimony that I claim the foregoing as my invention I affix my signature in presence of two wtnesses.

ORLANDO P. BRIGGS.

Witnesses:

C. CLARENCE looLit,` GEORGE W. HIGGINS, Jr. 

